Duan Ruoyu was really very interested in the thoughtful introduction.

While listening to the introduction, I kept going in and out of each workshop.

Learn more about the uses of various commercial items.

and the simple principle of manufacturing......

He became more and more excited when he saw it, because there were so many raw materials for the manufacture of commercial goods here.

In their south ......

Chapter 1583 of "Zhenguo Silly Shizi" The Clever Second Prince of Nanzhao! I am hitting it in my hand, please wait a moment,

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